Rendered perspective drawings are often used in formal presentations. Rendering perspective drawings are a little difficult and time consuming to render but can make the drawing more richness, interest, reality and are more communicative. Light, shade and shadow must be rendered in perspective drawings. There are many techniques of rendering perspectives. The choice of method depends on time available and budget. Minimal rendering in black and white can be used along with orthographic drawings which are easy to do. (Figures 11 – 15)
All rendering requires the consideration of light source, its direction, its influence on the interiors and the way the materials react to this source of light. Each line and stroke drawn in rendering perspectives must carefully consider these effects. An understanding of the relationship of light, value and shadow on basic forms in perspectives is required for successful perspective rendering. The cube, cylinder, sphere and cone are basic shapes that are found in combination in more complex objects. The light source above and slightly to the right or left creates three distinct values as light, medium, dark and cast a shadow. (Figure- 16)
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